/ Thesaurus / C Synonyms of company union Find synonyms for: Noun1. company union, union, labor union, trade union, trades union, brotherhoodusage: a union of workers for a single company; a union not affiliated with a larger unionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language